How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 6/6100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Mexico 2 Jamaica 0 +10.3
+10.3
+1.2
Uruguay 0 Venezuela 1 +2.3
+2.3
-0.1
Panama 2 Bolivia 1 -0.0
Argentina 2 Chile 1 -0.0
Week of 6/10100.0*Chance in playoffs100.0*Round of 8100.0*Average seed
Mexico 1 Venezuela 1 +0.9
Colombia 2 Costa Rica 3 +0.3
United States 1 Paraguay 0 -0.1
Chile 4 Panama 2 -0.1
Argentina 3 Bolivia 0 -0.1
Brazil 0 Peru 1 +0.1
Argentina 5 Panama 0 -0.0
Points
Chance Will Make Playoffs